CN1296571A - Wave length division multiplexer/demultiplexer optical device - Google Patents
Wave length division multiplexer/demultiplexer optical device Download PDFInfo
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- CN1296571A CN1296571A CN99803089A CN99803089A CN1296571A CN 1296571 A CN1296571 A CN 1296571A CN 99803089 A CN99803089 A CN 99803089A CN 99803089 A CN99803089 A CN 99803089A CN 1296571 A CN1296571 A CN 1296571A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/12107—Grating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12133—Functions
- G02B2006/12147—Coupler
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12133—Functions
- G02B2006/12159—Interferometer
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Abstract
Optical signal devices and methods of forming the same in which a substrate is provided with a pair of spaced apart cladding layers made of a material having a first refractive index, having sandwiched therebetween a core layer including a pair of waveguides having a second refractive index greater than the first refractive index and a grating region including a filter extending through the core and cladding layers for causing a single wavelength of light of a multiple wavelength light source to be segregated therefrom.
Description
Invention field
The present invention relates generally to integrated wavelength division multiplexer/demultiplexer optical devices, wherein can insert or tell the light of specific wavelength with effective and efficient manner.Can make this device with high tolerance, it is littler than general device generally to have more small-sized structure and an optical loss.
Background technology
The crowd knows the device (specific wavelength is the light of multi-wavelength perhaps) that is used to insert or tell the Wavelength-encoding signal in the prior art.This device is used optical fiber, and this optical fiber is mainly used in telecommunication system except using in LAN (Local Area Network), receiver network etc.Optical fiber can carry a large amount of information, and the purpose of device of the present invention is to obtain the selected amount of information from optical fiber by being separated in the information of carrying on the different wave length channel.
This class device comprises multiple element, and these elements provide the separation of desired Wavelength-encoding signal together.Develop integrated optical coupler and special directional coupler and finished the directional couple of loss (evanescent).Light signal is coupled to another slab guide from a slab guide.Signal equidirectional with signal direct of travel in first slab guide in second slab guide is propagated.
Use refraction grating (for example, Bragg grating) to separate the wavelength of arrowband.This grating reflector makes a kind of device of structure become possibility, uses this device to insert or to tell light signal and do not disturb other signal of other wavelength to fibre-optic transmission system (FOTS) or from fibre-optic transmission system (FOTS) in predetermined central wavelength.
In No. the 5th, 574,807, the United States Patent (USP) of Elias Snitzer, disclosed the Bragg optical-mechanical system of in optically coupled device, using, be incorporated herein by reference.' 807 patent has disclosed a kind of device, this device be used for predetermined central wavelength to or insert or tell light signal from the wavelength division multiplexer fibre-optic transmission system (FOTS) that carries other wavelength signals.Make a kind of two core fibres and light be coupled to the complete basically loss coupled field of another fibre core from a fibre core to be provided in the predetermined wave band, described two core fibres comprise two substantially the same, form the single-mode fiber of coupled zone.Two core fibres also comprise the Bragg optical-mechanical system, and this optical-mechanical system is substantially perpendicular to the axle of two core fibres.
People's such as Charles H.Henry United States Patent (USP) has disclosed Mach-Zehnder (MZ) type device for the 5th, 636, No. 309, and this device uses two planar optical waveguides (for example, optical fiber), and each optical waveguide comprises a fibre core and a covering (cladding).Waveguide comprises the arm staggered relatively that extends between two coupled zones.In the coupled zone, it is approaching to place the fibre core of respective waveguide quite each other, to promote the coupling of loss field.Place arm and make it spatially to separate, it is enough little causing maximum spacing between the arm, with by the radiation of variations in refractive index is shone two cores simultaneously and formed the Bragg grating index simultaneously.
The device that discloses such as above-mentioned prior art has many shortcomings.A shortcoming is to make difficulty.Second shortcoming is the Bragg grating that is difficult to adjust the arm of crossing over optical waveguide in grating region.The length that the 3rd shortcoming is waveguide causes bigger loss.
Therefore the major progress in the technology of optical waveguide device provides such device, and described device has bigger control and inserts and/or tell light signal in the control of predetermined wavelength perhaps multi-wavelength place on the path of light by device.
Summary of the invention
The present invention relates generally to optical signal device, this device provides more effective optical processing and reduces optical loss, to be provided for inserting and telling the more effective device of light signal.Especially, optical signal device of the present invention comprises:
A) substrate;
B) pair of cladding lamination, described covering lamination is to separate on the space, is made of the material with first refractive index value;
C) core layer, it comprises and is placed on the waveguide a pair of staggered relatively that has second refractive index value between the pair of cladding lamination of (greater than first refractive index value), causes the official post multi wave length illuminating source between first and second refractive index value can pass through this device in single mode; And
D) grating region comprises the covering lamination that means of filtering that runs through fibre core and the single wavelength light that causes described multi wave length illuminating source are separated from this grating region.
Also disclose the manufacture method of optical signal device of the present invention.
The accompanying drawing summary
Following drawing is the signal of embodiments of the invention, in drawing, and the parts that identical character representation is identical; And do not plan to limit the present invention with these drawings, the present invention is included by the claim of a part that becomes the application.
Fig. 1 is the side elevational view of optical signal device of the present invention, and the relative position of substrate, covering lamination and fibre core lamination is shown;
Fig. 2 is the synoptic diagram of the first embodiment of the present invention, is implemented in the loss coupling in the 3-dB coupled zone of device with the waveguide of placing;
Fig. 3 is the synoptic diagram similar in appearance to one embodiment of the present of invention of Fig. 2, and the waveguide that is illustrated in the coupled zone is located adjacent one another;
Fig. 4 is the synoptic diagram similar in appearance to the embodiment of Fig. 2, uses polymeric plate so that the support of multimode to be provided in the side in the coupled zone, disturbs (MMI) coupling mechanism thereby form the 3-dB multimode;
Fig. 5 is the synoptic diagram similar in appearance to one embodiment of the present of invention of Fig. 4, the 3-dB MMI coupling mechanism that band has conical in shape;
Fig. 6 is the synoptic diagram similar in appearance to one embodiment of the present of invention of Fig. 4, and the spacing of separating except each waveguide in two zones that are right after coupling mechanism and grating region outside is similar to equal distance;
Fig. 7 is the synoptic diagram similar in appearance to an alternative embodiment of the invention of Fig. 6, and wherein the MMI coupling mechanism has conical in shape;
Fig. 8 is the one embodiment of the present of invention similar in appearance to Fig. 2, lacks the arm that has spacing to separate, and the result causes one unbroken 100% directional coupler;
Fig. 9 is the one embodiment of the present of invention similar in appearance to Fig. 8, and wherein a waveguide is adjacent one another are;
Figure 10 is the one embodiment of the present of invention similar in appearance to Fig. 8, and wherein the 100%MMI coupling mechanism has replaced 100% directional coupler;
Figure 11 is the one embodiment of the present of invention similar in appearance to Figure 10, and wherein the 1005MMI coupling mechanism has conical in shape;
Figure 12 uses the synoptic diagram that the 2-channel inserted/told one embodiment of the present of invention of configuration;
Figure 13 uses the synoptic diagram that the 4-channel inserted/told one embodiment of the present of invention of configuration;
Figure 14 uses the synoptic diagram that the 4-channel inserted/told an alternative embodiment of the invention of configuration.
The preferred mode that carries out an invention
The present invention is directed to optical signal device, in this device, waveguide staggered relatively comprises core layer and upper and lower covering lamination, and wherein the most handy photosensitive material is made each corresponding layer, and described photosensitive material makes the application of refraction grating become possibility by stamping method.Optical signal device provides better simply manufacturing means, has less optical loss than the legacy system of using in technical field.
Usually, optical signal device comprises a substrate that a pair of covering lamination that is separated by spacing is arranged thereon, and described covering lamination has a core layer, comprises a pair of waveguide staggered relatively between core layer.As described below, preferably waveguide is applied to core layer by direct stamping method.Optical signal device also comprises wave filter means, the form of Bragg reflection grating system preferably, and this system runs through fibre core and covering lamination, makes the light that separates single wavelength channel (below be referred to as wavelength) from the input light source become possibility.
With reference to figure 1, the main layer that comprises optical signal device of the present invention is shown in the drawings.Especially, optical signal device 2 comprises the substrate 4 that has under-clad layer lamination 6 and top covering lamination 8 thereon.Between covering lamination 6 and 8, accompany core layer 10, as described below, in core layer mint-mark the waveguide (not shown).
Invented the waveguide layout of mint-mark in core layer 10 so that a kind of optical signal device to be provided, from the light source of a plurality of wavelength, separated the light of single wavelength therein and launch from optical signal device.As described below, can be added to optical signal device to the light signal of identical wavelength.
The multiple material that comprises glass, silicon, plastics (for example polycarbamate and polycarbonate) etc. can select to make the applied substrate of optical signal device of the present invention.The most handy photosensitive material is made under-clad layer lamination 6 and top covering lamination 8, preferably the refractive index value polymeric material lower than core layer 10.
The core layer 10 that each covering lamination of refractive index ratio is high is also made with photosensitive material.This photosensitive material comprises hydroxyethyl disphenoid diacrylate (ethoxylated bisphenol diacrylate) and chlorine fluorine diacrylate, and this photosensitive material is such material, by using for example photomask etc., can handle this material with energy source, so that a kind of material area (for example place of mint-mark waveguide) and another kind of material area are distinguished from coming.
Carry out the selection of the suitable material of covering lamination 6,8 and core layer 10 to a certain extent, cause the refractive index of core layer 10 and the refringence of covering lamination 6,8 to be suitable for offering with the radiative optical signal device of single mode (that is the basic model that, has Gaussian distribution (profile) in fact).The selection of suitable refringence partly depends on the size of the waveguide of using in core layer.For example, in refractive index is about 1.5 polymkeric substance, be about 6 microns waveguide for height and width, the refringence between core layer and the covering lamination should be not more than about 0.0078.When the size of waveguide increased, refringence reduced.The waveguide of for example, 7 microns (height and width) should be used and is not more than about 0.0057 refringence.
For given a pair of waveguide, whether the selection of suitable refringence also partly depends in that local waveguide crooked.If use bending in waveguide, then refringence should be in its higher-end in given range.
Make optical signal device of the present invention by on the substrate such as glass, forming the under-clad layer lamination.The most handy polymeric material is made the covering lamination, makes it become (cured) (promptly being sensitization) of curing through handling this material with energy (for example, ultraviolet ray).
Apply core layer and mint-mark waveguide thereon then.Can be used as positive emulsion or negative emulsion applies waveguide.For positive emulsion, on core material, place mask, and ultraviolet ray only is applied to the zone of not preparing the mint-mark waveguide.For negative emulsion, only remove mask, and shielding of ultraviolet radiation is to the irradiation of remaining emulsion in the zone of preparing the mint-mark waveguide.
Estimate one aspect of the present invention, apply grating and cross over two covering laminations and core layer.Known by in the light of known optical signal device waveguide nearly 25% light in the covering lamination, propagate.The invention provides the anaclasis in cladding regions, the loss that therefore reduces light widely reaches and is lower than 25% level.
As described below, use the optical signal device of the various configurations that suitable emulsion material can the production specific use for fibre core and cladding regions.
With reference to figure 2, single channel is shown in the drawings inserts/tell light signal, it is with the form that is formed on the Mach-Zehnder device 20 on the substrate (Fig. 1 is seen in the relevant position of substrate).The device 20 (the loss coupling wherein takes place in the coupled zone) that is shown among Fig. 2 has two substantially the same slab guides 22,24, makes this two waveguide form that becomes directional coupler aligned with each other in two 3-dB coupled zones 26,28.It between coupled zone 26 and 28 grating region 30 that comprises optical-mechanical system 32 (for example, Bragg grating).
Be shown in waveguide 22 and 24 enough distances separated from one another among the embodiment of Fig. 2, so that the loss coupling do not take place at grating region 30.
The light of a plurality of waveguides is by input port 34 accesss to plant 20.The wavelength with optical-mechanical system 32 resonance does not propagate into output port 36 to be further processed (for example, further divide and use) by grating.A preliminary election reflect in grating region 30 with optical wavelength optical-mechanical system 32 resonance and by dividing outbound port 38 output units 20.Can insert the light of predetermined wavelength by port 40.
The improvement that is shown in the device among Fig. 2 is pressed close to the waveguide in the coupled zone each other, so that is the zero stand-off between waveguide.With reference to figure 3, coupled zone 50 and 52 wherein are provided, (that is, not having spacing between waveguide) pressed close in waveguide 22 and 24 each other in the coupled zone.In this embodiment of the present invention, the zero stand-off configuration in coupled zone 50 and 52 between the waveguide makes to shorten device and increase the advantage that is easy to make becomes possibility.
Have again among the embodiment of the present invention, 3-dB coupling mechanism zone be with the form of the 3-dB MMI coupling mechanism of the identical refractive index of core material.The most handy polymeric material identical with core material made the MMI coupling mechanism.3-dB MMI coupling mechanism provides identical functions with the 3-dB loss coupling mechanism that can correctly separate light, so that when in two waveguide arms each was left the coupled zone, it can receive about 50% light.The IMM coupling mechanism has omitted interfering the needs of the loss coupling of handling, and is therefore very responsive for foozle and environmental change.In addition, when comparing with the loss coupling mechanism, the MMI coupling mechanism more can tolerate the variation of wavelength and polarization.
With reference to figure 4, the embodiment of optical signal device of the present invention shown in this figure, it has two coupler region 60 and 62, and each coupler region comprises a 3-dB MMI coupling mechanism 64 with identical rectangular xsect.
A corresponding embodiment shown in Figure 5 and shown in Figure 4, it is provided at than the advantage of making in the short distance.3-dB MMI coupling mechanism 66 with inside cone body 70 is provided in this embodiment.The edge is parabola shaped in one embodiment.The taper composition that is shown in the MMI coupling mechanism 66 among Fig. 5 makes the width of coupling mechanism less, and this has shortened the length of coupling mechanism, has therefore shortened the total length of optical signal device.Especially, 3-dB MMI coupling mechanism has opposite end, and described opposite end has bigger xsect than cone body, special core at cone body.
As previously mentioned, generally make the waveguide enough distances separated from one another in grating region, so that be not coupled.As previously mentioned, in the coupled zone, use the MMI coupling mechanism to omit the loss coupling.The MMI coupling mechanism makes light realize the separation of 50-50 on the relative broad range of the wavelength with less polarization sensitivity.The applicant has determined, when using the MMI coupling mechanism in the coupled zone, the loss coupling does not take place between waveguide input and output coupling mechanism, and the distance between the waveguide in grating region does not need to be increased to the loss necessary degree that is coupled that prevents so.As a result, in two zones that are right after coupling mechanism and grating region outside, can make the distance between the waveguide remain identical value or remain identical approximately value.
With reference to figure 6 optical signal device is shown, MMI coupling mechanism 64 wherein is provided in coupled zone 70 and 72.Be right after between the waveguide of coupled zone 70 and 72 outsides distance approximately with the waveguide in grating region 74 between distance identical.This embodiment of the present invention is advantageous, because there is not bending in arm, so the length of waveguide is shorter.Shorten length and eliminate the radiation loss that is imported by elbow by omitting elbow, the result causes less optical loss at the duration of work of device.
The improved form that is shown in the embodiment of Fig. 6 shown in Figure 7.Wherein, 3-dB MMI coupling mechanism is taper.As above more described in conjunction with the embodiment of Figure 4 and 5, conical in shape makes the MMI coupling mechanism realize identical purpose (that is, by 50/50 relevant coupling of multimode) when shortening length.
In another embodiment of the present invention, use 100% coupling mechanism (loss or MMI), and grating be placed on coupling mechanism in the middle of.These embodiment of the present invention are shown in Fig. 8-11.
At first with reference to figure 8, in coupler region 80 and grating region 30 (it is overlapping with the middle body of coupling mechanism), make waveguide 22 and 24 keep approaching with identical distance each other.The loss coupling takes place in this embodiment of the present invention.Because omitted all elbows that begin from grating region, shortened the length of waveguide.Owing on 3-dB point, make waveguide not separated stoping the loss coupling,, make it less than shown and in conjunction with the common width that takes place of device of Fig. 2-7 description so can reduce the width of the grating in grating region 30.
With reference to figure 9, place the waveguide 22 and 24 in coupled zone 80 and grating region 30 adjacent one another arely, so that very close to each other between them.As above described in conjunction with the embodiment of Fig. 2 and Fig. 3, this embodiment of the present invention is easy to make and the size that makes optical signal device reduces to some extent than the size of conventional apparatus.
In the foregoing description, as shown in figure 10, can replace the loss coupling mechanism with the 100%MMI coupling mechanism in conjunction with Fig. 8.The middle body of grating region 30 and coupler region 80 is overlapping.
The improved form of optical signal device shown in Figure 10 shown in Figure 11.Use inside taper 100%MMI coupling mechanism.As above described in conjunction with the embodiment of Fig. 5 and 7, taper MMI coupling mechanism 102 reduces the size of optical signal device.
Can manufacture multichannel to the present invention and insert/tell device.With reference to Figure 12,2 channels are shown in the drawings insert/tell device 110, wherein according to the present invention, the insertion/drop filter 112 that is disclosed (illustrating two) is the Mach-Zehnder device preferably.Illustrate as Figure 12 especially, insert/tell optical signal device and have top in conjunction with the described composition of Fig. 3.
In order to operate, have a plurality of wavelength (λ
1, λ
2, λ
3λ
N) light source input port 114, and wavelength (λ simultaneously
1) signal from port one 16 output, and wavelength X
2Signal from port one 18 output.The output of port one 20 comprise except respectively from port one 16 and 118 output predetermined wavelength (λ
1And λ
2) outside all wavelengths.At random, can be the light of predetermined wavelength by port one 22 (λ
2) and 124 (λ
1) insertion system and by port one 20 output.The double-photo signal device of Figure 12 can reduce the intensity at the drop channel that passes through the port basically, in described channel the fundamental quantity of light is sent to the branch outbound port, and can improve the isolation between the extraction of signal basically.
Embodiment in conjunction with Figure 12 uses the top same principle that is disclosed, and as shown in figure 13, can construct 4-channel according to the present invention and insert/tell device.Especially as shown in Figure 13, inserting/tell optical signal device has as above in conjunction with the described composition of Fig. 8.In this case, can use four ports (130-136) to insert signal, and can use four ports (140-146) to come extraction of signal simultaneously.Port one 50 is that main input port and port one 52 is main output (transmission) ports.
Can level be associated in all devices shown in Fig. 2-11 and insert/tell device to form multichannel.As shown in Figure 7 the insertion based on Mach-Zehnder/tell element is used in preferred embodiment, because in these devices (contrasting) with the device shown in Fig. 8-11 based on 100% directional coupler, the integral body of grating is in the place's reflection of 3-dB coupling level, and causing at the drop channel place has more light output to divide outbound port.
Use aforesaid identical principle in conjunction with Figure 12 with 13 embodiment, can construct the 4-channel according to the present invention who uses insertion based on Mach-Zehnder/tell element and insert/tell device, wherein the 3-dB coupling mechanism is top MMI coupling mechanism in conjunction with the described composition of Fig. 4, and described 4-CU channel unit shown in Figure 14.In this case, main input port is a port one 60.Main output (transmission) port is 162, and inserting port is port one 70-176, and the branch outbound port is port one 80-186.
Example 1
Use silicon chip as substrate.A kind of negative tone liquid light monomer [20.0g hydroxyethyl disphenoid diacrylate (ethoxylated bisphenol diacrylate) of rotation coated, 10.0g three propyleneglycoles diacrylates (tripropylene glycol diacrylate), 0.6g the potpourri of light contact agent (photoinitiator) Irgacure 651 and 0.09g anti-oxidant Irganox 1010], to form the thick layer of 10 μ m, then at mercury vapor lamp (Hg (mercury) i-line, carry out unified UV treatment under the wavelength=365nm), the solid-state thin layer that forms refractive index 1.4895 is as the under-clad layer lamination.A kind of negative tone liquid light monomer [20.0g hydroxyethyl disphenoid diacrylate of rotation coated, 8.0g three propyleneglycoles diacrylates, 2.0g 1,6-hexanediyl salt, 0.6g the potpourri of light contact agent Irgacure 651 and 0.09g anti-oxidant Irganox 1010], to the under-clad layer lamination, to form the thick layer of 6 μ m, place to such an extent that clear up (in mask with process, the width 6 μ m of waveguide) (the 4-channel inserts/tells device to waveguide circuit, wherein four each that insert/tell in the element in cascade are rectangle MMI types, the Mach-Zehnder interferometer of band 3-dB coupling mechanism) mask contacts, then under mercury vapor lamp, selectively this layer is carried out UV treatment by mask, solidify the fibre core waveguide circuit, this waveguide circuit has 1.4970 complete treated refractive index.Remove mask and non-irradiated part is removed with methyl alcohol.The identical light monomer rotation coated that is used for the under-clad layer lamination to core structure, is consequently formed the layer of similar thick 10 μ m; Then this layer covers through the ultraviolet ray irradiation under mercury vapor lamp, and the solid-state similar film that forms refractive index 1.4895 is as the top covering lamination.Use has prints the grating that (use works in the Argon ion laser of 363.8 nm) crosses over the arm that is separated by spacing in phase mask each in four Mach-Zehnder of four gratings.At last, this grating is placed on stands last UV treatment (60 seconds) and last thermal treatment (90 ℃, 1 hour) under the mercury vapor lamp.By the silicon chip that cuts the device end this device is tested, be transmitted into input port, use OSA (spectroanalysis instrument) to monitor four branch outbound ports simultaneously from the light in EDFA (being coated with the fibre amplifier of erbium) source.Test shows all four the normal outbound ports that divide of desired drop channel output.
Claims (35)
1. an optical signal device comprises:
A) substrate;
B) a pair of covering lamination that separates by spacing that constitutes by material with first refractive index value;
C) comprise the core layer of a pair of waveguide between the pair of cladding lamination staggered relatively, it has second refractive index value greater than first refractive index value, causes the official post multi wave length illuminating source between second and first refractive index value to pass through this device with the single mode form; And
D) comprise the grating region of the wave filter means that run through fibre core and covering lamination, be used to make single wavelength light of described multi wave length illuminating source from wherein separating.
2. optical signal device as claimed in claim 2 is characterized in that each in covering lamination and the core layer is made of photosensitive material.
3. optical signal device as claimed in claim 1 is characterized in that, the wave filter means comprise Bragg reflection grating system.
4. optical signal device as claimed in claim 1 is characterized in that, by direct photoetching process waveguide is applied to core region.
5. optical signal device as claimed in claim 1 comprises a device that has the Mach-Zehnder form of grating, and described grating is crossed over the arm that is separated by spacing at 3-dB level place.
6. optical signal device as claimed in claim 5 is characterized in that the 3-dB coupling mechanism is a directional coupler.
7. optical signal device as claimed in claim 6 is characterized in that, distance of the waveguide each interval in the coupled zone allows the loss coupling.
8. optical signal device as claimed in claim 6 is characterized in that the waveguide in the coupled zone is approximating.
9. optical signal device as claimed in claim 5 is characterized in that, the 3-dB coupling mechanism is the MMI coupling mechanism.
10. optical signal device as claimed in claim 9 is characterized in that the MMI coupling mechanism has unified rectangular cross section.
11. optical signal device as claimed in claim 9 is characterized in that, the MMI coupling mechanism is taper, and its opposed end partly has bigger xsect than center main.
12. optical signal device as claimed in claim 9 is characterized in that, the waveguide in grating region be right after the waveguide that separates by spacing each other of MMI coupler region outside compare have multiple spurs more from separate spacing.
13. optical signal device as claimed in claim 9 is characterized in that, at grating region be right after in these two districts, district in MMI coupling mechanism outside, waveguide is the spacing of same distance approximately separately.
14. optical signal device as claimed in claim 1 comprises coupling mechanism and grating region, it is characterized in that, in coupling and two districts of grating, waveguide separates the spacing of same distance each other approximately.
15. optical signal device as claimed in claim 14 comprises directional coupler district and the grating region overlapping with the middle body of coupled zone, it is characterized in that, do not make waveguide separate enough distances to prevent the loss coupling at 3-dB point place, the result causes unbroken 100% directional coupler.
16. optical signal device as claimed in claim 15 is characterized in that, the waveguide in the coupled zone is approximating.
17. optical signal device as claimed in claim 14 comprises a 100%MMI coupling mechanism.
18. optical signal device as claimed in claim 17 is characterized in that, the MMI coupling mechanism has unified rectangular cross section.
19. optical signal device as claimed in claim 17 is characterized in that, the MMI coupling mechanism is taper, and its opposed end partly has bigger xsect than center main.
20. a multichannel insertion/branched optical cable telltale comprises the cascade of optical signal device, it is characterized in that, each optical signal device comprises:
A) substrate;
B) a pair of covering lamination that separates by spacing that constitutes by material with first refractive index value;
C) comprise the core layer of a pair of waveguide between the pair of cladding lamination staggered relatively, it has second refractive index value greater than first refractive index value, causes the official post multi wave length illuminating source between second and first refractive index value to pass through this device with the single mode form; And
D) comprise the grating region of the wave filter means that run through fibre core and covering lamination, be used to make single wavelength light of described multi wave length illuminating source from wherein separating.
21. multichannel insertion/branched optical cable telltale as claimed in claim 20 comprises a device that has the Mach-Zehnder form of grating, described grating is crossed over the arm that is separated by spacing at 3-dB level place.
22. multichannel insertion/branched optical cable telltale as claimed in claim 21 is characterized in that the 3-dB coupling mechanism is a directional coupler.
23. multichannel insertion/branched optical cable telltale as claimed in claim 22 is characterized in that, distance of the waveguide each interval in the coupled zone allows the loss coupling.
24. multichannel insertion/branched optical cable telltale as claimed in claim 20 is characterized in that each optical signal device of cascade has approximating waveguide in the coupled zone.
25. multichannel insertion/branched optical cable telltale as claimed in claim 21 is characterized in that the 3-dB coupling mechanism of each optical signal device of cascade is the MMI coupling mechanism.
26. multichannel insertion/branched optical cable telltale as claimed in claim 25 is characterized in that the MMI coupling mechanism has unified rectangular cross section.
27. multichannel insertion/branched optical cable telltale as claimed in claim 25 is characterized in that the MMI coupling mechanism is taper, its opposed end partly has bigger xsect than center main.
28. multichannel insertion/branched optical cable telltale as claimed in claim 25 is characterized in that, the waveguide in grating region be right after the waveguide that separates by spacing each other of MMI coupler region outside compare have multiple spurs more from separate spacing.
29. multichannel insertion/branched optical cable telltale as claimed in claim 25 is characterized in that, at grating region be right after in these two districts, district in MMI coupling mechanism outside, waveguide is the spacing of same distance approximately separately.
30. multichannel insertion/branched optical cable telltale as claimed in claim 1 is characterized in that each optical signal device of cascade comprises coupling mechanism and grating region, wherein, in coupling and two districts of grating, waveguide separates the spacing of same distance each other approximately.
31. multichannel insertion/branched optical cable telltale as claimed in claim 30 comprises directional coupler district and the grating region overlapping with the middle body of coupled zone, it is characterized in that, do not make waveguide separate enough distances to prevent the loss coupling at 3-dB point place, the result causes unbroken 100% directional coupler.
32. multichannel insertion/branched optical cable telltale as claimed in claim 31 is characterized in that the waveguide in the coupled zone is approximating.
33. multichannel insertion/branched optical cable telltale as claimed in claim 30 comprises a 100%MMI coupling mechanism.
34. multichannel insertion/branched optical cable telltale as claimed in claim 33 is characterized in that the MMI coupling mechanism has unified rectangular cross section.
35. multichannel insertion/branched optical cable telltale as claimed in claim 33 is characterized in that the MMI coupling mechanism is taper, its opposed end partly has bigger xsect than center main.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/027,026 | 1998-02-20 | ||
| US09/027,026 US6091870A (en) | 1998-02-20 | 1998-02-20 | Wavelength division multiplexer/demultiplexer optical device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296571A true CN1296571A (en) | 2001-05-23 |
| CN1218199C CN1218199C (en) | 2005-09-07 |
Family
ID=21835243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN998030899A Expired - Fee Related CN1218199C (en) | 1998-02-20 | 1999-02-19 | Wave length division multiplexer/demultiplexer optical device |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6091870A (en) |
| EP (1) | EP1060425B1 (en) |
| JP (1) | JP2002504705A (en) |
| CN (1) | CN1218199C (en) |
| AU (1) | AU2687199A (en) |
| CA (1) | CA2320357A1 (en) |
| DE (1) | DE69917007T2 (en) |
| WO (1) | WO1999042873A1 (en) |
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-
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- 1999-02-19 JP JP2000532753A patent/JP2002504705A/en active Pending
- 1999-02-19 CA CA002320357A patent/CA2320357A1/en not_active Abandoned
- 1999-02-19 WO PCT/US1999/003541 patent/WO1999042873A1/en active IP Right Grant
- 1999-02-19 DE DE69917007T patent/DE69917007T2/en not_active Expired - Lifetime
- 1999-02-19 AU AU26871/99A patent/AU2687199A/en not_active Abandoned
- 1999-02-19 EP EP99907139A patent/EP1060425B1/en not_active Expired - Lifetime
- 1999-02-19 CN CN998030899A patent/CN1218199C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100373194C (en) * | 2003-03-22 | 2008-03-05 | 秦内蒂克有限公司 | Optical wavelength division multiplexer/ demultiplexer device |
| CN103487881A (en) * | 2013-07-10 | 2014-01-01 | 李若林 | Tunable optical filter and chip integrated device with tunable optical filter |
| CN103487881B (en) * | 2013-07-10 | 2018-06-05 | 马亚男 | Adjustable light wave-filter and the integrated chip device comprising the wave filter |
| CN113376748A (en) * | 2021-06-17 | 2021-09-10 | 中国科学院半导体研究所 | Composite wave-splitting device of integrated silicon-based Bragg reflector and preparation method thereof |
| CN113376748B (en) * | 2021-06-17 | 2022-08-02 | 中国科学院半导体研究所 | Composite wave-splitting device of integrated silicon-based Bragg reflector and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69917007D1 (en) | 2004-06-09 |
| EP1060425A1 (en) | 2000-12-20 |
| US6091870A (en) | 2000-07-18 |
| JP2002504705A (en) | 2002-02-12 |
| CA2320357A1 (en) | 1999-08-26 |
| WO1999042873A1 (en) | 1999-08-26 |
| AU2687199A (en) | 1999-09-06 |
| DE69917007T2 (en) | 2005-04-28 |
| CN1218199C (en) | 2005-09-07 |
| EP1060425B1 (en) | 2004-05-06 |
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